Description: 
 Product Name: large diameter butterfly valve 
 Specifications: DN50-DN2000 
 Features: 0 
 Details: 
 1. Valve material 
 1, Body material: cast iron, cast steel, stainless steel, etc. 
 2, and disc material: stainless steel, cast steel 

 2. Use requirements 
 1, Nominal diameter: DN50 - 2000 (mm) 
 2, the maximum nominal pressure :1.0-4 .0 Mpa 
 3, suitable temperature: -280 ℃ -600 ℃ 
 4, drive Type: Electric (DC24V, 110V, AC220V, 380V) 

 3. Product Features 
 1, the disc seal for the hard and soft layering pieces of metal, with metal seals and seal the dual advantages of flexibility, both in low and high temperature conditions, both with excellent sealing performance. 
 2, using three-dimensional asymmetric structure, seat and disc without almost no friction, with the more closed more tightly sealing function. 
 3, valve sealing surface, the use of cobalt-based alloy welding, sealing surface wear resistance, long life with help. 
 4, unique structure, flexible operation, labor-saving, convenient, and free from high power medium pressure, the end effect of sealing performance, reliable, long service life. 

 4. Versatility 
 High temperature, corrosion resistance, widely used in petrochemical, food, pharmaceutical, paper, utilities, shipping, water supply and drainage, metallurgy, energy, pipeline system, for a variety of corrosive gas, liquid, semi-liquid and solid powder medium.